2nd Periodical - Math 9 (Regular Section) - 2nd quarter of 2015 DOCX

Title	2nd Periodical - Math 9 (Regular Section) - 2nd quarter of 2015
Author	J. Palacpac
Pages	4
File Size	340.4 KB
File Type	DOCX
Total Downloads	87
Total Views	148

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2nd Periodical Examination Name: ____________________________ Mathematics 9 (R) Grade and Section:__________________ C.Y. 2015-2016 Date: _____________ Points: ______ / 45 I. Find the value of the unknown variable using inverse (first space) and direct variation (second space). Write your answers on the space provided. (2 pts each item). Use the following formula: for direct variation ( y1 x1 = y2 x2 ¿, and for inverse variation (y1 ¿(x1)=( y2)(x2). _____ , _____1. x1 = 5 x2=8 y1=20 y2=? _____ , _____2. x1 = 8 x2=? y1=6 y2=32 _____ , _____3. x1 = ? x2=3 y1=24 y2=8 _____ , _____4. x1 = ? x2=3 y1=24 y2=8 _____ , _____5. x1 = 5.5 x2=3 y1=? y2=1.5 _____ , _____6. x1 = 4 x2=12 y1=12 y2=? _____ , _____7. x1 = 9 x2=¿ 7 y1= 18 y2=? _____ , _____8. x1= 4 x2=¿ ? y1= 3 y2=2 _____ , _____9. x1 = 10 x2=¿ ? y1=¿ 3 y2=¿1.2 _____ , _____10. x1 = 0.25 x2=0.75 y1=¿ 2.5 y2=¿? II. Write the letter of the correct answer by choosing the best answer. _____11. The cost c varies directly as the number n of pencils is written as a. c = kn b. k = cn c. n = k c d. c = k n _____12. The speed r of a moving object is inversely proportional to the time t travelled is written as...